package com.zsyh.jiujiu.utils;


import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;


/**
 * 时间工具类
 * 
 * @author ruoyi
 */
public class DateUtils
{
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
    
    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM", 
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     * 
     * @return Date() 当前日期
     */
    public static Date getNowDate()
    {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     * 
     * @return String
     */
    public static String getDate()
    {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime()
    {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow()
    {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format)
    {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date)
    {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date)
    {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts)
    {
        try
        {
            return new SimpleDateFormat(format).parse(ts);
        }
        catch (ParseException e)
        {
            throw new RuntimeException(e);
        }
    }







    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate)
    {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 获取几天前，几天后的日期
     * @param day 小于0几天前  大于0几天后
     * @return
     */
    public static String handleDateString(int day) {
        Date date = new Date();//当前日期
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");//格式化对象
        Calendar calendar = Calendar.getInstance();//日历对象
        calendar.setTime(date);//设置当前日期
        calendar.add(Calendar.DATE, day);
        String time = sdf.format(calendar.getTime());
        return time;
    }

    /**
     * 获取几天前，几天后的日期
     * @param day 小于0几天前  大于0几天后
     * @return
     */
    public static Date handleDate(int day) {
        Date date = new Date();//当前日期
        Calendar calendar = Calendar.getInstance();//日历对象
        calendar.setTime(date);//设置当前日期
        calendar.add(Calendar.DATE, day);
        return calendar.getTime();
    }

    public static String handleDateString(String _date, int day) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//格式化对象
        Date date = null;
        try {
            date = sdf.parse(_date);
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }//当前日期
        Calendar calendar = Calendar.getInstance();//日历对象
        calendar.setTime(date);//设置当前日期
        calendar.add(Calendar.DATE, day);
        String time = sdf.format(calendar.getTime());
        return time;
    }

    public static Date handleDate(Date date, int day) {
        Calendar calendar = Calendar.getInstance();//日历对象
        calendar.setTime(date);//设置当前日期
        calendar.add(Calendar.DATE, day);
        return calendar.getTime();
    }

    public static void main(String args[]){
        System.out.println(handleDate(-1));
    }


}
